Title :
An adaptive sampling-interval generator for digital relaying
Author :
Benmouyal, Gabriel
Author_Institution :
IREQ, Varennes, Que., Canada
fDate :
7/1/1989 12:00:00 AM
Abstract :
A method for measuring frequency at a fixed sampling rate is described, and a variable-rate method is introduced. An algorithm based on a digital Fourier transform, which locks the sampling frequency in a microprocessor-based system to the fundamental of an incoming voltage waveform, is devised. The algorithm also intrinsically provides a measurement of the frequency. The algorithm is applied to the case of a volt/hertz relay
Keywords :
computerised instrumentation; frequency measurement; microcomputer applications; power system measurement; power system protection; relay protection; adaptive sampling-interval generator; algorithm; digital Fourier transform; frequency measurement; microprocessor-based system; power system relay protection; sampling frequency; voltage waveform; Digital relays; Equations; Fourier transforms; Frequency measurement; Power measurement; Power system relaying; Protective relaying; Sampling methods; Velocity measurement; Voltage;
Journal_Title :
Power Delivery, IEEE Transactions on
